852138 is the PIN Code of Singihaun, which is located in Supaul district, Bihar state.
Singihaun Post Office is located at Singihaun, Supaul of BIHAR state. It is a Branch Post Office. A Post Office (PO) / Dak Ghar is a facility in charge of sorting, processing, and delivering mail to recipients. POs are usually regulated and funded by the Government of India (GOI). Pin code of Singihaun PO is 852138. This Postoffice falls under Saharsa postal division of the Bihar postal circle.